There will be two processes

[mycode65678]

When two processes occur, the modified code will not take effect. You need to manually end the process and run it again.

devdeMacBook-Pro:src dev$ ps -ax|grep cash-caiji
34036 ttys001    0:00.00 grep cash-caiji
33983 ttys002    0:24.77 /Volumes/data/go/bin/cash-caiji
34005 ttys002    0:24.56 /Volumes/data/go/bin/cash-caiji

[mycode65678]

I found that I used github.com/gocraft/work and there will be multiple processes. Note that this code will not be.

func main() {
	gin.SetMode(gin.ReleaseMode)
	go web.Start()
	// Note that the following code will not appear multiple processes, just run the queue listener
	queue := tasks.Queue{}
	go queue.Start()

	select {}
}

[erikdubbelboer]

My guess is that package starts separate processes as workers. And since you aren't calling queue.Stop() when your program exists it doesn't kill those worker processes. Try something the following code:

func main() {
	gin.SetMode(gin.ReleaseMode)
	go web.Start()
	// Note that the following code will not appear multiple processes, just run the queue listener
	queue := tasks.Queue{}
	go queue.Start()

	c := make(chan os.Signal, 1)
	signal.Notify(c, os.Interrupt, os.Kill)
	<-c

	queue.Stop()
}